Why does not working callback method?

General Discussion
#1

def dataCallback(physicalgraph.device.HubResponse hubResponse) {
logger(“dataCallback”);
def msg, json, status
try {
msg = parseLanMessage(hubResponse.description)
status = msg.status
json = msg.json
state.dataList = json
state.latestHttpResponse = status
} catch (e) {
logger(‘warn’, "Exception caught while parsing data: "+e);
}
}

def getDataList(){
def options = [
“method”: “GET”,
“path”: “/”,
“headers”: [
“HOST”: “https://community.smartthings.com”
]
]

def myhubAction = new physicalgraph.device.HubAction(options, null, [callback: dataCallback])
log.debug("myhubAction");
log.debug(myhubAction);
sendHubCommand(myhubAction)

}

The dataCallback function is not called.
def myhubAction = new physicalgraph.device.HubAction(options, null, [callback: dataCallback])

There is no error log, but logger (“dataCallback”);
Does not occur.

#2

Try formatting your code so it’s easier for others to read. You can either highlight the block of text and then tap the </> icon in the editor toolbar or surround the code with triple backticks:

```

your code here

```

What are you trying to accomplish? Do you want to make an internal (LAN) or external (internet) HTTP call? And are you trying to do it from a Device Handler or a SmartApp?

If you are trying to make an external asynchronous HTTP call, check out the following docs:
https://docs.smartthings.com/en/latest/smartapp-developers-guide/async-http.html

include 'asynchttp_v1'

def initialize() {
    def params = [
        uri:  'https://api.github.com',
        contentType: 'application/json'
    ]
    def data = [key1: "hello world"]

    asynchttp_v1.get('responseHandlerMethod', params, data)
}

def responseHandlerMethod(response, data) {
    log.debug "got response data: ${response.getData()}"
    log.debug "data map passed to handler method is: $data"
}

There are also simply synchronous external HTTP helper methods as documented here:

https://docs.smartthings.com/en/latest/smartapp-developers-guide/calling-web-services-in-smartapps.html

def params = [
    uri: "http://httpbin.org",
    path: "/get"
]

try {
    httpGet(params) { resp ->
        resp.headers.each {
           log.debug "${it.name} : ${it.value}"
        }
        log.debug "response contentType: ${resp.contentType}"
        log.debug "response data: ${resp.data}"
    }
} catch (e) {
    log.error "something went wrong: $e"
}